9
6 . Wall thimble and Sidewall vent terminations
They are used when venting out through the wall . These terminations are
special stainless steel vents for gas appliances and are UL listed as Category
II, III and IV . For different wall thicknesses, there are two ranges of lengths
available . (Refer to the Flexmaster brochure for details .) Install these
vent terminations in accordance with their installation instructions and any
applicable local code .
7 . Direct-vent concentric termination kit
Used when terminating direct-vent (sealed combustion) systems, with
indoor
models that require a 3 in . (76 mm) intake and a 4 in . (102 mm) exhaust . This
concentric termination provides the convenience of only having to make one
penetration through a sidewall instead of two separate penetrations for the
intake and exhaust piping . The termination includes a bird screen, restricting
small animals, pests, and foreign objects from entering into the vent system .
This sidewall termination is available in two different sizes, to cover a wide
range of wall thicknesses . For different wall thicknesses, there are two ranges
of lengths available . (Refer to the Flexmaster brochure for details .)
8 . Isolation valve kit: TK-IV01-AB
The kit uses Isolation Valves to isolate a unit for service . The Pressure Relief
Valve is to help protect the unit and release if the pressure in the tankless
water heater or hot water system exceeds 150 psi .
Covering wall thicknesses
Part#
6.75 – 13.0 in.
2SVSHTCKIT43S
12.25 – 19.25 in.
2SVSHTCKIT43
Covering wall thicknesses
Part#
Wall Thimble 4 - 7 in.
2SVSWTF04
Wall Thimble 5 - 10 in.
2SVSWTEF04
Termination Hood
2SVSHTX04
Termination Box
2SVSRTF04
Wall thimble
Termination Hood
Termination Box
